LEGUMINOS^. (PILSK FAMILY.) 125 



88. Galactia. Calyx 4-cleft. the upper lobe broadest ami entire. Style beardless. Drart 



and bractlcts minute, mostly deciduous. 

 == = == Leaves 1 - 3-folioIate. Ovules and seeds only one nr two. Flowers ydlow. 



89. Bhynchosia. Keel scytbe-shaped. Calyx 4 -5-partcd. Tod short. 



SuBORDKR II. Cscsalpiiiieae. (Hrasilktto Family. j COrolU 

 imperfectly or not at all pa[)ilionaceoas, sonietiine.s nearly rpfrular, imbri- 

 cated in the bud, the uj)per or odd ])etal inside and enclosed hv the other.", 

 Stamens 10 or fewer, commonly distinct, in.'Jerted on the calyx. Seeds 

 anatropous, often with albumen. Embryo straight. 



• Flowers imperfectly papilionaceous, jierfeot. Trees. 



40. Cercis. Calyx campanulate, 5-toothcd. Pod flat, wing-margined. Leaves simple. 



»* Flowers not at all papilionaceous, perfect. Calyx 5-parted. Herbs. 



41. Cassia. Leaves simply and abruptly pinnate, not glandular-punctate. 



42. Hoffnianseg^gia. Leaves bipinnate, glandular-punctate. 



» * * Flowers not at all papilionaceous, polygamous or dioecious. Trees. 



43. Gymnocladus. Leaves all doubly pinnate. Calyx-tube elongated, at its summit 



bearing 5 petals resembling the calyx-lobes. Stamens 10. 



44. Gleditschia. Thorny ; leaves simply and doubly pinnate. Calyx-tube short ; its lobes, 



petals, and the stamens 3-5. 



Suborder III. Miinoseae. (Mimosa Family.) Flower regular, 

 small. Corolla valvate in aBstivation, often united into a 4 - S-lohed cup, 

 hypogynous, as are the (often very numerous) exserted stamens. Em- 

 bryo straight. Leaves twice pinnate. 



45. Desmanthus. Petals distinct. Stamens 5 or 10. Pod smooth. 



46. Sclirankia. Petals united below into a cup. Stamens 8 or 10. Pod covered witk 



small prickles or rough projections. 



1. BAPTIST A, Vent. False Indigo. 



Calyx 4 - 5-toothed. Standard not longer than the wings, its sides reflexed ; 

 keel-petals nearly separate, and, like the wings, straight. Stamens 10, dis- 

 tinct. Pod stalked in the persistent calyx, roundish or oblong, inflated, 

 pointed, many-seeded. — Perennial herbs, with palmately 3-foliolate (rarely 

 simple) leaves, which generally blacken in drying, and rarcme<l flowers. 

 (Named from ^ainl^o}, to dye, from the economical use of some species, which 

 yield a poor indigo.) 

 * Racemes rnnm/, slw7-t and loose, terminal, often leaf if at base , flowers yellow. 



1. B. tinctbria, I\. Br. (Wild Indigo.) Smooth and slender (2-3° 

 high), rather glauc(jus; leaves almost sessile, leaflets rounded wcdge-obovate 

 {\-\\' long); stipules and bracts miinite and deciduous ; pods oval-globose, 

 on a stalk longer than the calyx. — Sainly dry soil, N. Eng. to Fla., west to 

 Minn, and La. 



* * Racemes fewer, opposite the leai^es. 



•♦- Flowers i/ellow. 



2. B. vill6sa, Fdl. Sometimes soft -hairy, usually minutely pul)escent 

 when young, erect (2 - 3*^ high) with divergent branches ; leaves almost ses- 



